H42X series water pump bottom valveDetailed product description：

Overview
The H42X series water pump bottom valve is an energy-saving valve that is generally installed at the bottom of the underwater suction pipe of the water pump Restricting the return of liquid from the water pump pipe to the water source serves the function of only entering and not exiting There are many inlet products and reinforcement ribs on the valve cover, which play a role in preventing blockage and are mainly used in the pumping pipeline The role of waterways and supports Caliber types include single petal, double petal, and multi petal There are flange connections and threaded connections.

Structure and Principle
The bottom valve of the water pump consists of valve estimation, valve disc, valve cover, liner, sealing ring and other parts. See the figure below for details. Water from the water source enters the valve body through the valve cover Under the pressure of the fluid, the valve disc opens the water. When the indicator stops, the pressure in the outlet pipe quickly closes the valve disc, and the liquid will not flow back to the water source, which plays a role in both smooth pumping and saving water energy loss.

performance specifications
Nominal pressure: PN0.25MPa
Nominal diameter: DN15 to DN350
Applicable media: water, oil, and non corrosive media
Applicable temperature: ≤ 50 ° C
Main component materials: gray cast iron, nitrile rubber
Execution standard: Q/12 NJ3583-2001
Test standard: GB/T13927-1992

Main external dimensions of H42X series water pump bottom valve:

Model	Nominal Diameter DN(mm)	H	D	D1	D2	Z-d	Applicable Medium	Operating temperature
H42X	thirty-two	one hundred and five	one hundred and twenty	ninety	seventy	4-φ14	Water, oil, liquid	stainless steel ≤150℃
	forty	one hundred and ten	one hundred and thirty	one hundred	eighty	4-φ14
	fifty	one hundred and twenty-five	one hundred and forty	one hundred and ten	ninety	4-φ14
	sixty-five	one hundred and fifty	one hundred and sixty	one hundred and thirty	one hundred and ten	4-φ14
	eighty	one hundred and seventy-five	one hundred and eighty-five	one hundred and fifty	one hundred and twenty-eight	4-φ18
	one hundred	one hundred and ninety	two hundred and five	one hundred and seventy	one hundred and forty-eight	4-φ18
	one hundred and twenty-five	two hundred and forty	two hundred and thirty-five	two hundred	one hundred and seventy-eight	8-φ18
	one hundred and fifty	two hundred and eighty	two hundred and sixty	two hundred and twenty-five	two hundred and two	8-φ18
	two hundred	three hundred and sixty	three hundred and fifteen	two hundred and eighty	two hundred and fifty-eight	8-φ18

H42X series water pump bottom valve